America's space agency NASA has revealed a series of vintage travel posters that show three of the nearly 5,000 planets. These planets were discovered by space telescopes outside our solar system.

Travelers are attracted with each exoplanet's most tempting trait like red grass, two Suns in the sky or a very strong gravity. In the NASA poster, Kepler-16b is shown as a planet similar to Earth but it is also believed by the scientists that it might also be a gas giant. The information is not exa...